On the official website for Gundam it’s been announced that the Gundam the Origin vol.3 Dawn of Rebellion, the third episode of Gundam the Origin will release in Japan on May 21st. There will also be advance sales and streaming for the series on the same date. The third episode, as with previous episodes will be opening in 15 theaters in Japan for two weeks. Now the collectors edition Blu-ray Disc of the episode will cost 10,000 yen with a special illustration by Yoshikazu Yasuhiko, illustration sheets, storyboards and setting material collection. Members of the Bandai Visual Club who pre-order the Blu-ray, and those who pre-order it through the Bandai premium store will receive a film frame from the episode. The pre-orders start April 10th and the standard DVD and Blu-ray disc will release June 10th in Japan. The third volume features Char Aznable and his future comrade Garma Zabi after they join Zeon’s military academy. The series is based off of a manga that released June 25th 2001 and finished June 26th 2014 releasing 24 volumes. A plot summary can also be seen of it below quoted from MAL:
What was the tragedy that decided the fates of Char Aznable, the man later nicknamed the “Red Comet” as an ace pilot of the Zeon forces, and his sister Sayla Mass?
The two siblings’ journeys, brought on by the sudden death of their father Zeon Zum Deikun who was a leader of the Spacenoids, are depicted in the four episodes of “Chronicle of Char and Sayla.”
The Zabi family who seize control of Side 3 and lead the Principality of Zeon, the early days of many renowned Zeon ace pilots who later fight in the One Year War, the secrets of mobile suit development, conflicts with the Earth Federation Forces, and the road leading to the outbreak of war—all will be revealed.